Patents by Inventor John Machin

John Machin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Segregation of streams for the production of ammonia
    Patent number: 7947168
    Abstract: A method for recovering NH3 present in a sour water stream containing odiferous compounds such as pyridines, indoles, ketones and mercaptans produced during an upgrading process for upgrading bitumen from oil sands into synthetic crude comprising treating the sour water stream in a sour water treatment unit to produce a NH3-rich stream and a H2S-rich stream; and hydrotreating the NH3-rich stream in a hydrotreater in the presence of hydrogen to remove the odiferous compounds such as pyridines, indoles, ketones and mercaptans and produce a treated NH3-rich stream.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: May 24, 2011
    Assignee: Syncrude Canada Ltd.
    Inventors: John Machin, Daniel Rusnell, Paul Won, Monica Morphy, Xin Alex Wu, Brenda Crickmore, Craig McKnight
  • SEGREGATION OF STREAMS FOR THE PRODUCTION OF AMMONIA
    Publication number: 20090223869
    Abstract: A method for recovering NH3 present in a sour water stream containing odiferous compounds such as pyridines, indoles, ketones and mercaptans produced during an upgrading process for upgrading bitumen from oil sands into synthetic crude comprising treating the sour water stream in a sour water treatment unit to produce a NH3-rich stream and a H2S-rich stream; and hydrotreating the NH3-rich stream in a hydrotreater in the presence of hydrogen to remove the odiferous compounds such as pyridines, indoles, ketones and mercaptans and produce a treated NH3-rich stream.
    Type: Application
    Filed: March 5, 2008
    Publication date: September 10, 2009
    Applicant: SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project
    Inventors: JOHN MACHIN, DANIEL RUSNELL, PAUL WON, MONICA MORPHY, XIN ALEX WU, BRENDA CRICKMORE, CRAIG McKNIGHT
  • Sand reclamation
    Patent number: 4416694
    Abstract: A foundry sand composition which comprises particulate sand, aqueous sodium silicate as binder and an alkylene carbonate as hardener and which after use for moulds and/or cores in metal casting can be reclaimed for reuse by an attrition process contains before use no more than 11% by weight of alkylene carbonate based on the weight of aqueous sodium silicate and during the reclamation process has a residual moisture content of less than 0.8% by weight as determined by loss on ignition on 550.degree. C.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: November 22, 1983
    Assignee: Foseco International Limited
    Inventors: John Stevenson, John Machin, David L. Dyke